starting to add to vote 2012 we're just four days away from the first debate between president obama and mitt romney. some are calling these debates a make or break moment for romney with just 38 days left to election day. david joins us from the white house with an inside look at how both sides are prepping. >> heading back to boston for more debate practice, mitt romney would not endorse the view that the debates could be do or die for his campaign. >> i don't think anyone would suggest the debates aren't important. i can't tell you how important it will be. it will be a good chance for the president and for me to have a conversation with the american people about our respective views. >> mr. obama spent a couple of hours practicing yesterday as well and has three days set aside for more practice. it's nick namede debate camp. and near tend of camp like now it's a full-on mock debate following the time rules podeyums, the exact distance apart and fill-ins for the opposition. preparing joe biden. >> it's only tense when they give the completely wrong answer. the goal is to make them